Machine for drying paper



(No Model.) A L. W. NOYES.

MACHINE POR DRYING PAPER. No. 413,728. y Patented Oct. 29, 1889.

Nv PETERS. Hmm-Luhqnpner. wnningmn. n.6

UNITED 4STATESv PATENT OFFICE.

vLEVIS \V. kNOYES, OF EAST PEPPERELL, MASSACHUSETTS.

MACHINE FOR DRYING PAPER.

SPECIFICATION forming part of Letters Patent No. 413,728, dated October29, 1889.

Application filed February 8, 1889. Serial No. 299,154. l (No model.)

To @ZZ whom it may concern:

Be it known that I, LEWIS WV. NOYES, of East Pepperell, countyofMiddlesex, State of Massachusetts, have invented an Improvement inMachines for Drying Paper, of which the following description, inconnection with the accompanying drawings, is a speciiication, likeletters on the drawings representing like parts.

The drying apparatus herein to be describedand forming part of thisinvention comprises drying-pipesor hot-air chambers,

arranged to deliver currents of air, or both, arranged in succession,and a conveyer-preferably an endless belt or band-arranged to,

carry the paper as itis delivered from the coating-machine coated on oneside along adjacent to the said pipes or chambers vto be desiccated.TheV drying-pipes and hot-air chambers may be variously arranged, and insome instances cold air may be suppliedjn lieu of hot air. kA current orcurrents of air are employed for keeping the paper on the conveyer atsuch points as it might naturally leave it.

lMy invention consists, essentially, in the combination, in apaper-drying apparatus, of

apaper-conveyer and the exhaust or suction f x box Vordevice withheatingor drying pipes and hotair boxes or chambers,all 'substantiallyasl described. ther features of my invention will be hereinafter pointedout in the specification and l claims.

Eto.

Figure l shows in longitudinal section a drying-machine, togetherwith-two coatingmachines; Fig. 2, an end view of the returning-cylinderat one end of the drying-maf chine; Fig. 3, a plan view of a portion ofthe endless conveyer, Figqi, a cross-section of ing-cylinder B. Systemsor coils of steam or other warming pipes d are arranged soine just aboveand others just below the conveyer c at. the upperpart of the apparatus,so as to heat and thereby dry the paper as it lis fed along adjacent tosaid pipes. Boxes or chambers e, preferably having perforated bottoms,which may be of wire-netting or like material, as shown at e in Fig. 7,are placed above the conveyer c, they being connected by pipes with anysuitable source or supply of hot ai r,which will be forced or blowntherethrough by means of ordinary blowers, the current of air issuingfrom the boxes or chambers in direct contact with the paper assisting inholding the same down iirmly upon the conveyer, thus preventing theedges from curling up, as well as assisting in the drying operation. l

If desired, cold air may be used inY lieu of hot air, and the severalboxes or chambers which are herein shown las arranged alternately withrelation to the heating-pipes may be otherwise arranged, and, ifdesired, connected with a single source of supply.

The returning-cylinder B consists of'a drum having closed ends, thebarrel of the drum or cylinder having slits, as 8. (See Fig. 2.)Suitable pipes, as f, lead from the drum, through which the air isexhausted from the drum, so that as the paperpasses around the drum onthe conveyer it wi'llbe held down firmly thereon. `A shield f incloses aportion of the drum, as best shown in Fig. l, so that by exhaust- -ingthe air from the drum it will be most effective upon the side or faceopposite the shield.

The box or chamber D, having the perforated bottom, which is similar tothat shown in Fig.r7, is located just above the paper-conveyer c at thelower part of the apparatus,

I do not desire to limit my invention to any particular means forproducing this result. On the under side of the conveyer c, at the lowerpart of thef apparatus, systems or coils of heating or drying pipes, asd, are arranged, and also boxes or chambers, as e, from which may issuecurrents of hot or cold air. The web of paper b, carried forward by theconveyer c in proximity to the heatingI or drying pipes and the hot airboxes or chambers around the returning-cylinder B, returns to the secondcoating-machine, as E, or it may be to another set of coating devices,to be coated, sized, or colored upon the opposite side.

The endless band which I prefer to employ consists of a reticulated bandhaving crossbars, as t', (see Fig. 3,) the ends of which extend beyondthe edge of the band and which co-operate with or bear upon suitableguides or tracks t, arranged at the lower part of the apparatus, tothereby prevent the band from sagging. o

The web o of paper varies in width, and hence I provide the suction boxor chamber D with suitable slides, as n, (see Fig. 4,) which may bemoved, as desired, to vary the width of the opening at the bot-tom ofthe box to correspond with the width of the paper.

In Fig. 5 I have shown a series of independent endless bands orconveyers, which may be used in lieu of the single or continuous endlessband shown in Fig. l.

By the means or apparatus herein shown it will be seen that the web ofpaper coated, sized, or colored upon one side may be dried sufficientlyto be immediately coated, sized, or colored upon the opposite side.

In lien of the suction box or chamber D, arranged as shown, currents ofair may be blown against the under side of the paper to hold the same inplace upon the conveyer, and, furthermore, a series' of pipes t, havingopenings u therein, as shown in Fig. G, may be used instead of the boxD, said pipes being arranged so that the suction may act on the paper atdifferent points.

I claim- I. In a paper-drying apparatus, the paperconveyer and theYexhaust or suction box, chamber, or device, combined with heating ordrying pipes and hot-air boxes or chambers, all substantially as and forthe purposes set forth.

2. In a paper-drying apparatus, a paperconveyer, combined with anexhaust or snction box, chamber, or device for holding the paper incontact with the conveyer, and a system of heating or drying pipes orconduits in proximity to which the conveyer moves, substantially asdescribed.

3. In a paper-drying apparatus, the endless reticulated paper-conveyerand means, substantially as described, for holding the paper on theconveyer on its upper side by a current of air, combined with thereturning-cylinder, around a portion of which the conveyer is passed,and means, substantially as described, for continuously exhausting theair therefrom, as and for the purposes set forth.

4. In a paper-drying apparatus, the paperconveyer, combined with theexhaust or suction chamber or chambers-havinga perforated bottomadjacent to which said conveyer passes and slidesto Vary the width ofopening of said bottom, as and for the purposes set forth.

5. In a paper-drying apparatus, the reticulated paper-conveyer, combinedwith the hollow cylinder B,having`closed ends and slits 8 in its barrel,and around a portion of which said conveyer passes, the shield f',closely encircling a portion of the cylinder opposite to that encircledby the conveyer, and means, substantially'as described', for exhaustingthe air from the cylinder through its axis, whereby the paper will beheld' firmly upon the outer side of the con'veyeras it passes around thecylinder opposite said shield, substantially as/described.

6, In a paper-drying apparatus, the conveyer having cross-bars t' andcontinuouslyrotated rollers for moving the conveyer, and the guides forthe cross-bars, combined with means, Asubstantially as described,arranged above the conveyer at the lower part of thc apparatus forholding the paper by suction, substantially as described.

In testimony whereof I have signed my name to this specification inthepresence of two subscribing witnesses.

LEWIS W. NOYES.

Witnesses:

BERNICE J. NoYEs, A. S. WIEGAND.

